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https://issues.apache.org/jira/browse/IO-706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17275683#comment-17275683
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Gary D. Gregory commented on IO-706:
------------------------------------

[~belugabehr]

Great suggestion. The way to do this within Commons IO is with an input stream 
observed. I added a specialization you can try in git master like this:

{code:java}

final TimetampedObserver timetampedObserver = new TimetampedObserver(); 
try (final ObservableInputStream inputStream = 
        new ObservableInputStream(...), timetampedObserver)) { 
   ... 
} 
System.out.printf("IO duration: %s%n", 
timetampedObserver.getOpenToCloseDuration());

{code}

 

> TimedOutputStream/TimedInputStream 
> -----------------------------------
>
>                 Key: IO-706
>                 URL: https://issues.apache.org/jira/browse/IO-706
>             Project: Commons IO
>          Issue Type: New Feature
>          Components: Streams/Writers
>            Reporter: David Mollitor
>            Priority: Major
>
> Create a {{FilterInputStream}} {{FilterOutputStream}} that records the time 
> it was opened (instantiated) and the time it was closed.  Add method to 
> return the delta so that users can request the amount of time required to 
> read from (or write to) the underlying Stream.



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